SAR ADC
MS51689
16bit, 4/8 channel, 250kSPS, SAR ADC
Datasheet Download
Overview
MS51682N/MS51689N is a 4/8 channel, 16bit, charge redistribution successive approximation analog-to-digital converter, using a single power supply. Internally, the MS51682N/MS51689N integrates a lossless 16-bit SAR ADC, a low crosstalk multiplexer, an internal low-drift voltage reference source (with a choice of 2.5V or 4.096V), a temperature sensor, an optional monoppole filter, and a sequencer (useful when multiple channels are sampled sequentially).
MS51682N/MS51689N uses SPI interface to realize the configuration of registers and the reading of converted data. The SPI interface uses a separate power supply (VIO).
The MS51682N/MS51689N comes in a small QFN20 package and operates from -40°C to +125°C.
Key Features
- • 16-bit lossless resolution
- • Integrated multiplexer: 4 channels (MS51682N),
- 8 channels (MS51689N)
- • Optional input configurations: unipolar and bipolar input,
- Single-ended and differential inputs
- • INL (@external reference 2.048V) : ±0.5LSB (typical),
- ±1.5LSB (Max)
- • Dynamic range: 93.8dB
- • SINAD (@external reference 2.048V) : 92.5dB(20kHz);
- THD: -100dB (20kHz)
- • Analog input range: 0 to VREF (VREF up to VDD)
- • Multiple reference: internal 2.5V or 4.096V, external reference
- • Internal temperature sensor
- • Channel sequencer
- • Single supply operation: 2.3V to 5.5V;
- Logic power supply: 1.8V to 5.5V
- • Serial interface: compatible with SPI, MICROWIRE,
- QSPI and DSP
- • Power consumption: 3.5mW(2.5V@200kSPS),
- 12.5 mW (5 v @ 200 KSPS)
- • Standby current: 50nA
Key Features
Multi-channel system monitoring
Battery powered devices
Medical devices: ECG, EKG
Mobile communications: GPS
Power line monitoring
Data acquisition
Seismic data acquisition system
Instrumentation
Process Control
